A234-03
Connecting laboratory and field measurements of smoke composition to build a framework explaining ozone formation from Western U.S. wildfires measured during FIREX-AQ
Wednesday, 16 December 2020: 07:08
Virtual
Matthew Mitchell Coggon1, Georgios Gkatzelis2, Kanako Sekimoto3, Jessica Gilman4, Aaron Lamplugh5, Vanessa Selimovic6, Robert J Yokelson6, Ilann Bourgeois7, Jeff Peischl5, Thomas B Ryerson8, Patrick R Veres9, J A Neuman10, Young Ro Lee11, David Tanner12, L Gregory Huey12, Glenn S Diskin13, Hannah Halliday14, John B Nowak15, Samuel R Hall16, Kirk Ullmann17, Caroline Womack18, Michael A Robinson5, Steven S Brown4, Armin Wisthaler19, Laura Tomsche20, Felix Piel19, Markus Müller21, Glenn M Wolfe22, Jin Liao23, Reem A Hannun22, Jason M St Clair24, Thomas F Hanisco25, Lu Xu26, John D Crounse26, Krystal Vasquez26, Paul O Wennberg26, Alan Fried27, Petter Weibring27, Dirk Richter27, James Walega27, Pedro Campuzano Jost28, Demetrios Pagonis29, Andrew W Rollins18, Pamela Rickly18, Johnathan W Hair15, Taylor J Shingler15, Abigail Koss30, Bin Yuan31, Kyle J Zarzana32, Jose L Jimenez29, Jordan E. Krechmer33, Joost A de Gouw34, Christopher D Cappa35, Christopher Lim36, David H Hagan37, Jesse H Kroll38, James Roberts9 and Carsten Warneke5, (1)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (2)NOAA Earth Systems Research Laboratory, Chemical Sciences Division, Boulder, United States, (3)Yokohama CIty University, Graduate School of Nanobioscience, Yokohama, Japan, (4)NOAA Earth System Research Laboratory, Chemical Sciences Laboratory, Boulder, CO, United States, (5)CIRES and NOAA ESRL, Chemical Sciences Laboratory, Boulder, CO, United States, (6)University of Montana, Department of Chemistry, Missoula, MT, United States, (7)NOAA Chemical Sciences Division, Boulder, CO, United States, (8)NOAA ESRL Chemical Sciences Division, Boulder, CO, United States, (9)NOAA ESRL, Chemical Sciences Laboratory, Boulder, CO, United States, (10)Cooperative Institute for Research in Environmental Sciences (CIRES), NOAA ESRL, Chemical Sciences Laboratory, Boulder, CO, United States, (11)Georgia Institute of Technology Main Campus, Atlanta, GA, United States, (12)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States, (13)NASA Langley Research Ctr, Hampton, VA, United States, (14)US Environmental Protection Agency Research Triangle Park, Durham, NC, United States, (15)NASA Langley Research Center, Hampton, VA, United States, (16)NCAR, Denver, CO, United States, (17)National Center for Atmospheric Research (NCAR), Atmospheric Chemistry Observations and Modeling Laboratory, Boulder, CO, United States, (18)NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, CO, United States, (19)University of Oslo, Department of Chemistry, Oslo, Norway, (20)Max Planck Institute for Chemistry, Mainz, Germany, (21)University of Innsbruck, Innsbruck, Austria, (22)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (23)Universities Space Research Association and NASA Goddard Space Flight Center, Greenbelt, MD, United States, (24)NASA Goddard Space Flight Center, Atmospheric Chemistry and Dynamics Lab, Greenbelt, MD, United States, (25)NASA GSFC, Greenbelt, MD, United States, (26)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (27)University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, (28)University of Colorado Boulder, Boulder, CO, United States, (29)University of Colorado at Boulder, Cooperative Institute for Research in Environmental Sciences (CIRES) and Department of Chemistry, Boulder, CO, United States, (30)Tofwerk AG, Thun, Switzerland, (31)Jinan University, Institute for Environmental and Climate Research, Guangzhou, China, (32)University of Colorado Boulder, Chemistry & CIRES, Boulder, CO, United States, (33)Aerodyne Research Inc., Billerica, MA, United States, (34)University of Colorado, CIRES and Department of Chemistry, Boulder, CO, United States, (35)University of California, Department of Civil and Environmental Engineering, Davis, CA, United States, (36)South Coast Air Quality Management District, Diamond Bar, CA, United States, (37)Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States, (38)Massachusetts Institute of Technology, Cambridge, MA, United States
Abstract:
The formation of tropospheric ozone from biomass burning smoke is highly variable owing to complex chemical and physical processes. Ozone is formed by the photochemical reactions involving the hydrocarbons and NO
x emitted from wildfire smoke, which vary based on combustion temperatures, combustion efficiency, and fuel composition. Meteorological conditions and plume structure also impact the rate at which ozone forms by influencing radical formation and NO
y (NO
x + NO
x reservoirs) partitioning. Moreover, the mixing of wildfire smoke with urban emissions can further enhance ozone formation owing to additional NO
x emissions.
In light of this complexity, recent advances in laboratory measurements from the 2016 Firelab campaign have shown that non-methane organic gases and nitrogen-containing species emitted from Western U.S. fuel types can be parameterized into a small number of profiles that depend on pyrolysis temperature and combustion efficiency. Here, we use 0-D box models to evaluate the extent to which the variability of smoke composition observed in the Firelab influences ozone formation potential. We evaluate this framework using in-situ measurements of real wildfire smoke sampled during the 2019 FIREX-AQ campaign. We will also discuss how these modeling results could be used in conjunction with satellite observations to inform predictions of ozone formation immediately downwind of fires.
